Needed by https://github.com/rust-lang/rust/pull/42938
I've now ripgrepped for "panicked at" and found no further
test that hardcodes the "filename:line$" format.
---- test_hello stdout ----
<tab>thread 'test_hello' panicked at 'assertion failed: false', \
- tests[/]footest.rs:4
+ tests[/]footest.rs:4[..]
")
.with_stdout_contains("\
failures:
---- test_hello stdout ----
<tab>thread 'test_hello' panicked at 'assertion failed: false', \
- src[/]lib.rs:4
+ src[/]lib.rs:4[..]
")
.with_stdout_contains("\
failures: